148.7.295569128473723...168391.5.847687914352452.8.619.74.6.931.3...1.8..1..3..2.Incredible puzzle! Maybe not all that hard, but how often do you get BUG+3 where the three 3-candidate cells are in the same Box AND the same Row or column?I found that the BUG-killing candidates all led to 6r4c4, 2r4c6 stte.